ETH has been an overly centralized and untrustworthy coin ever since they rolled back the chain. It has distinguished itself among altcoins with the possibilities it offers, but it has never been reliable. There is also no benefit in switching from PoW to PoS.
I'm not sure if there is an end game here. Coins can survive without being decentralized. They can maintain their functions even when majority of coins are in certain people. Even if they aren't reliable, they can still be traded on the exchange. ETH will probably be around for a long time.